my car borkes and splutters when i floor it but when i disconnect supercharger it doesn't what could this be??? ------ maf??? if it was it wouldn't run tho would it?

also car is ticking over at 1400 revs < that aint right

and finally one of my hydrolic lifters/ camfollowers had dropped and is now tapping could this be causing problems and could oil change resolve this?
also where in uk could i get a new one?

cheers macca

im starting to fkn hate merc's